From d332f2f4fed07e3b756689742ab4e18516a078d9 Mon Sep 17 00:00:00 2001
From: Robb <35880555+robbwatershed@users.noreply.github.com>
Date: Thu, 17 Aug 2023 13:49:43 +0200
Subject: [PATCH] More discreet zoom display

---
 .../fragments/reader/ReaderPagerFragment.kt   | 26 ++++++++++++++-----
 .../main/res/layout/fragment_reader_pager.xml | 18 +++++++++++++
 2 files changed, 37 insertions(+), 7 deletions(-)

diff --git a/app/src/main/java/me/devsaki/hentoid/fragments/reader/ReaderPagerFragment.kt b/app/src/main/java/me/devsaki/hentoid/fragments/reader/ReaderPagerFragment.kt
index 33de9f23f..5b00d4ea9 100644
--- a/app/src/main/java/me/devsaki/hentoid/fragments/reader/ReaderPagerFragment.kt
+++ b/app/src/main/java/me/devsaki/hentoid/fragments/reader/ReaderPagerFragment.kt
@@ -142,6 +142,7 @@ class ReaderPagerFragment : Fragment(R.layout.fragment_reader_pager),
     private lateinit var processPositionDebouncer: DebouncerK<Pair<Int, Int>>
     private lateinit var rescaleDebouncer: DebouncerK<Float>
     private lateinit var adapterRescaleDebouncer: DebouncerK<Float>
+    private lateinit var zoomLevelDebouncer: DebouncerK<Unit>
     private var firstZoom = true
 
     // Starting index management
@@ -186,16 +187,14 @@ class ReaderPagerFragment : Fragment(R.layout.fragment_reader_pager),
         }
         rescaleDebouncer = DebouncerK(this.lifecycleScope, 100) { scale: Float ->
             adapter.multiplyScale(scale)
-            if (!firstZoom)
-                context?.let {
-                    ToastHelper.toast(it, R.string.percent_no_digits, scale * 100.0)
-                }
+            if (!firstZoom) displayZoomLevel(scale)
             else firstZoom = false
         }
         adapterRescaleDebouncer = DebouncerK(this.lifecycleScope, 100) { scale: Float ->
-            context?.let {
-                ToastHelper.toast(it, R.string.percent_no_digits, scale * 100.0)
-            }
+            displayZoomLevel(scale)
+        }
+        zoomLevelDebouncer = DebouncerK(this.lifecycleScope, 500) {
+            hideZoomLevel()
         }
         Preferences.registerPrefsChangedListener(prefsListener)
         Settings.registerPrefsChangedListener(prefsListener)
@@ -265,6 +264,7 @@ class ReaderPagerFragment : Fragment(R.layout.fragment_reader_pager),
         processPositionDebouncer.clear()
         rescaleDebouncer.clear()
         adapterRescaleDebouncer.clear()
+        zoomLevelDebouncer.clear()
         navigator.clear()
         binding?.recyclerView?.adapter = null
         binding = null
@@ -1508,6 +1508,18 @@ class ReaderPagerFragment : Fragment(R.layout.fragment_reader_pager),
         ToastHelper.toast(R.string.slideshow_stop)
     }
 
+    private fun displayZoomLevel(value: Float) {
+        binding?.apply {
+            viewerZoomText.text = resources.getString(R.string.percent_no_digits, value * 100.0)
+            viewerZoomText.isVisible = true
+        }
+        zoomLevelDebouncer.submit(Unit)
+    }
+
+    private fun hideZoomLevel() {
+        binding?.viewerZoomText?.isVisible = false
+    }
+
     companion object {
         const val KEY_HUD_VISIBLE = "hud_visible"
         const val KEY_GALLERY_SHOWN = "gallery_shown"
diff --git a/app/src/main/res/layout/fragment_reader_pager.xml b/app/src/main/res/layout/fragment_reader_pager.xml
index d7148d15c..ab1f712de 100644
--- a/app/src/main/res/layout/fragment_reader_pager.xml
+++ b/app/src/main/res/layout/fragment_reader_pager.xml
@@ -109,6 +109,24 @@
         tools:text="28/255"
         tools:visibility="visible" />
 
+    <TextView
+        android:id="@+id/viewer_zoom_text"
+        style="@style/TextShadowLight"
+        android:layout_width="0dp"
+        android:layout_height="wrap_content"
+        android:clickable="false"
+        android:focusable="false"
+        android:gravity="center"
+        android:padding="8dp"
+        android:textAlignment="center"
+        android:textColor="@color/white_opacity_25"
+        android:textSize="@dimen/caption"
+        android:visibility="gone"
+        app:layout_constraintBottom_toBottomOf="parent"
+        app:layout_constraintStart_toStartOf="parent"
+        tools:text="144%"
+        tools:visibility="visible" />
+
     <ProgressBar
         android:id="@+id/progress_bar"
         style="@style/Widget.AppCompat.ProgressBar.Horizontal"